Tobacco smoking pipe



March 16, 1937. A. CARDIN TOBACCO SMOKING PIPE Filed May 31, 1955 A Home];

Patented Mar. 16, 1937 UNITED STATES TOBACCO SMOKING PIPE Leon A. Cardin, Pawtucket, R. I.

Application May 31,

1 Claim.

This invention relates to a novel and improved tobacco smoking pipe characterized chiefiy by the incorporation therein of an economical disposable and readily renewable liner unit in order to pro- 5 vide a structure wherein said unit may be renewed from time to time by the user so that the desired feature of sanitation is maintained while insuring a wholesome and pleasant smoke.

Or stated otherwise, the principal novelty is predicated upon the adoption and use of a light weight, suificiently strong and durable, temporarily usable liner for employment in conjunction with a more or less conventional type of. pipe, said unit possessing the desired fireproof and absorbent properties and being readily insertable and removable, whereby to permit it to be readily extracted and thrown away when it has served its full extent of utility.

Briefly stated, the preferred embodiment of the invention comprises inner and outer companion units, the outer unit being the regulation type of smoking pipe but including a sectional bowl and an inner unit being of one-piece construction including a tubular liner to extend into the bore of the stem as well as an inner bowl which fits temporarily in the outer bowl, together with such other additional fittings as are necessary to maintain the parts properly assembled for normal smoking and disassembled for cleaning and re newing of the temporary liner unit.

Other features and advantages will become more readily apparent from the following description and drawing.

In the drawing:

Figure 1 is a view in section showing the preferred embodiment of the invention.

Figure 2 is an elevational View of the pipe proper with the detachable accessories omitted for clearness of illustration.

Referring first to Figure 2 it will be observed that thepipe proper comprises a suitable stem 3 having a bowl 4 of conventional configuration and proportion at one end. The bowl is shown as being made up of a pair of companion sections 5 and 6, section 5 being made integral with the stem 3 and the section 6 hingedly attached at its bottom thereto by suitable hinge means as indicated at I. The upper open end of the bowl,

0 as a unit, is provided with a split annulus 8 formed by the cooperation of the semi-circular lip extensions on the upper end of the bowl sections 5 and 6. For convenience of description that portion of the sections 5 and 6 which sur- 55 round concentrically the annulus 8 is denoted as 1935, Serial No. 24,427

a ledge or shoulder 9. Moreover, the receptacle portion of the bowl is indicated at H).

The inner renewable liner unit is preferably of one-piece construction and includes a tobacco bowl II which is proportioned and constructed to fit into the receptacle l0 and which is provided in its upper open end with an endless rim or hook which is engageable over the annulus 8. This serves to keep the hinged sections 5 and 6 of the main bowl 4 closed around the tobacco receiving bowl or liner H. In addition there is a clamping and retaining ring l2 which fits frictionally around the channel shaped rim of the part I I and rests on the ledge 9 as shown in Figure 1. This friction fit is sufficient to satisfactorily clamp the parts in assembled relationship. Extending from and integral with the bottom of the liner or bowl II is a tube I3 which may be described as the smoke delivery tube and this fits into the stem 3 and constitutes a sleeve or lining therefor.

As before stated the protector unit or liner is made of some lightweight absorbent material of a fireproof character so that it will promote satisfactory smoking and will last for a reasonably long time. Being lightweight and of inexpensive material, when. it has become completely saturated with tobacco juice or is otherwise impaired it can be readily removed, thrown away, and replaced by a duplicate unit. It is the renewable liner idea with which I am concerned, rather than the specific construction shown as the preferred embodiment in the drawing. At the same time this particular embodiment has been found as practical as any and may well be adopted for carrying the invention into actual practice.

Minor changes in shape, size and rearrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired.

Having thus described the invention, what is claimed as new is:

In a tobacco smoking pipe of the class described, a main bowl composed of hingedly connected companion sections, one of said sections being provided with an integral laterally directed bored smoke conducting stem, both of said sections being formed adjacent their upper entrance ends with complemental semi-circular upstanding flanges defining a concentric centralized retention annulus, said annulus constituting a continuation of the mouth portion of the receptable of said bowl and defining radially and outwardly of said annulus a fiat-faced clamping ring seat, a removable liner unit of light weight disposable fireproof material comprising a temporary tobacco receiving bowl to fit in the first-named main bowl, said temporary bowl having a channel-shaped retention annulus at its upper end engaging over said retention annulus, said temporary bowl being further provided with a tubular protective sleeve fitting into the bore of said stem to serve as a temporary 10 liner for the wall of the bore, and a clamping ring of an external diameter corresponding with the outside diameter of said main bowl, said ring being seated firmly on said seat and being of a cross-sectional dimension substantially equal to the height of said channel-shaped retention annulus whereby the upper surfaces of the ring and the channel-shaped annulus are flush. 

